Viewing attachment for microscopes



1940- E. A. SENEGAL r 2,185,926 VIEWING ATTACHMENT FOR TMICROSCOPES I Filed June 18, 1958' s Sheet s-Sheet -1 g Jan. 2, 1940. E. A. SENEGAL VIEWING ATTACHMENT FOR MICROSCOPES Filed June 18) 1938 3 Sheets-Sheet 2 ZQa/zraz'rk Seneca/Z @ww @5131. 34m

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Jan. 2, 1940- E. A. SENEGAL VIEWING ATTACHMENT FOR MICROSCQPES Filed June 18, 19:58

' 3 Sheets-Sheet 3 Inventor W702? 1f. senecaz Attorneys I a casing-supporting post; certain was STATES: [PATENT- oF i'cE I A A EEZTOR M rcRosCo ES Q Ephraim A.

Seneca]; St. Albans, Vt., assignor, of

Y twenty-five 'per cent to Frances D. Twigg, Rutland, Vt.; said Ephraim M. 'H. Alexander, administrator of A. Seneca], deceased Application June '18,: 1938, @Serial No. 214,544

1 Claim.

room, the objectplaced under the microscope for examination, and also for. photographing, if desired, such object while the same is in a magnim connection with the wherein:

Figure 1 is a the invention, v

Figure 2 is a'long'itudinal casing'and associated parts, 7

Figure 3 is a horizontal sectional view through the casing taken substantially on the line 3 3 ofFigure2, Y Z g Figure 4 is a fragmentaryvie'w of a stand and parts being being shown accompanying drawings side elevational view illustrating sectional view of a shown in section, with other parts in elevation, 4 1

Figure 5 is a front elevational upper hood-equipped end of the casing,

Figure 6 is a plan view of a framed ground or frosted glass,

Figure 7 is an elevational view of a photo plate and screen therefor,

Figure 8 is a projector bulb assembly,

' Figure 9 is a view of a base plate and supporting post for the projector-bulb assembly, certain parts being shown in section and other parts in elevation,

Figure 10 is a top plan view of the assembly shown in Figure 9, but with the supporting part omitted, and

igure 11 is an elevational view of a screen.

type of microscope reference numeral 1. vided as usual with a indicated generally by the Microscope 1 is also prolower orientable mirror 8 (c1. ss 24) and the invention together with its tualpractice, if desired, the

view at the has secured thereto, through the that is'held at the desired position of adjustment through the medium of a screw it as will be clear from a study of Figure 4.- V

The post composed of the sections I 2 and i3 supports at the. desired position of vertical ad-' justment a. casing l5.

The casing I5 is in, the form of a substantially funnel-shaped hollow body having its-sides converging towards its lower ends and is made of wood, metal, vor-othersuitable material. In accasing l5 may have an exterior covering of leather or other suitable material.

Secured suitably to one of the sides of the casing is an attaching bracket plate. l6 that has-a portion extending from said side of the'casing and apertured asat H to receive a threaded reduced upper terminal [3a of the post section l3. Said apertured portionof the attaching bracket I6 is secured to said end l3a. of the post section l3 through the medium of a nut [8.

One of the sides of th end of the casing is provided with'an opening l9 and at the base of said'opening the casing 15, interiorly, is provided with a substantially continuousscreen-supporting frame 20. Frame I is adapted to slidably ground glass Ztmounted within a suitable frame 22, or a photographic plate '23. Manifestly, the plate 2| I is used when it is merely desired to examine the specimen, while the photographic plate 23 is used when it is desired to make a photo graph of the magnified specimen. Photographic plate 23 is'provided with a slide screen 24 so that a selected portion of the plate may be exposed as desired.

In connection with the above it will be noted that at the bottom thereof the casing I5 is provided with an opening 25' that aligns with the upperjend of the microscope 1. Thus it will be seen that the bulb 9 will direct a concentratedintense light upon the reflecting mirror 8 of the microscope so that the illuminating light may be passed upwardly through the object slide I0, and then through the microscope and the casing l5 to produce or the photographic-plate 23, an enlarged projected optical to be examined. V V

'Thefcasing I 5 has projecting from the upper end thereof at the side equipped with the openas the case may be, image of the object upon the frosted glass-screen 2|,

. g5, casing 15 at the upper ing IS a hood 25 the sides of which converge towards the opening is. The hood 25 will serve to keep out the light thus permitting use of the device in a lighted room.

Also, that the enlarged projected optical image of the object being examined, and as produced upon the screen 2| may be the more easily viewed, there is suitably mounted within the upper end' 1 c, {l 1; to accommodate a threaded stud l1 rising from of the casing l5, and above the frame 20, are- I 5 n ie iie' e can ably and removably a supporting rod orpost 42*that atits lower end s I g 43 'risingfro'rn abajsefplatej fl, 'Post'sectionfil is secured at the desired positionoi vertical fleeting mirror 26. Thus, one by looking into the mirror 26 will obtain, without undue strain onfl the eyes, a complete view of the enlarged optical image produced p n the screen 2|? When the image of the object to be e'xamined recourse ishad to a light-excluding screen 21. Y

The screen 21 light-excluding material mounted within afr'ame 28. Screen 21, mounted within the irame-iayis accommodated within therefor in the hood. At theT stop there'oi the hood,'in alignment with the .top or the frame 29,

is provided with a slot to;facilitate insertionjandI removal of the Also in accordance I H the light source, namely the bulb}, ismounted' within a suitable reflector. 30 that; in tum is suitlight excludin'g 21.

tia1lyspherical perforated casing 13 I f In this connection it win be seen that ithe reilector w is provide d'fat one endthereof withajdi ametrically, "that. threadsl enlarged threaded base portion ,32

is formed otanysuitable dark photographic plate 23 isused for the purpose of taking a photograph of the magnified.

I g the hood 25 throughtthe medium of a suitable retaining iram'e 29 provided.

with the preset it invention swinging the casing be placed at the desired position of angular ad- "justment.

the base 5. Threaded on stud 41 is a thumb nut 48 that is adapted to be threaded home into binding engagement with the base plate 44 for securingthe latter at the desired position of adjustment on the base 5 relative to the base 6 of the microscope.

From the above it will-, be-seen thatthe light source may beLadjuSted towardv or away: from the microscope as found desirable; and that also by 3| vertically the bulb 9 may the upper end of the .It wi11 thusbeseenthat with my device, one may;witho'ut undue .eye strain, readily view and examine the, magnified specimen placed under "the microscopep and'also a photograph of the specimen so magnifiedmay be readily made in order to'provid'ea 0rd thereof.

permanent photographic reci i th ught thei ...c e r u der a ding E h construction, manner '0 f usina'iii lityjendadvank tages' offan invention embodying the; features of 1 the" present inventlon will behadwithout a mofr'e' deseri ed the invention' w t s;

t e des r p ion-1" Having thus claimed as new isij In ajdevicepoi the,

class" described, a? base, a

microscope supported on the basefif a vstandard] mounted alanine" subs an-"Y 1 r lengthfof 13 9.5

rising from tneffbasa, means or a justin thei .1 1 and m. a; i rtis i'ar ees viewing casing attachedto the top of the stat ng; ard and provided at itslower endwith an, openwithin a substantially cylindrical neck 33iorniedi integral with the casing 3 I.

modatef thelight extension c'ord35.

Diametrically opposite .a to the eck 13 3, Teasing; a tubular .internailyfthreaded.

32 s provided with neck 36 into which 38 as shown. a. g I Casing 30 a so has extendingfroni. thereof a threaded stud 39 that'is accommodated within an eye 7 I section 4|. tion 4| has a sliding fitin threads a -tubular' lenslcasing 31. Mounted'in the lens cas'in'gTl' isthe spot lens The base 3Zoilthej 1 reflector is formed integral withahandle '34 that has a suitablebore therethroughto accorn sid .i

"provided on the upper endol Post see-; a tubular post section? threaded on'to .a" stud 1 ing for reflecting an image I g n the hood, saidhood having a 'slot in its .top and ing "substantially aligning" with' the hu scopa,

i c sin a 9 p side? th reof having an opening therein, zontally arranged hood 'exte d a en n ne" m th said e" o t m iand i i jins he i nehip said'h'ood havingits' top substantiallyfiush; with j e p of t e casin s. a d .itsbq tcm a a dg wt eb t m gen-oi th fQD i JimLhdrizpntally arran the casing, in 'aplane adiacentthe-lower wall for 'means exte'nding fac'ross j e e a e ment arr in s d t a r the lower wall the openinginsaidiside ot the casing,said slide adapted toreceiveeither a screen or a photographic plate, a reflecting mirror diagonally arranged-i the uppervend of thefcas 0n the'screen through" s guidin'g me'ans in the hood forj'rec'eiving an elejustme'nt'throu'gh thejmediumof a screw. p h qall i g ig d parisedithrough'saidsloh The base plat rests on the {aforementioned ewi li e 5 1 SENECAEJ 

